Linear <= 2.7.12 - Authenticated (Contributor+) Stored Cross-Site Scripting
Vulnerability Description
The Linear plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'linear_block_buy_commissions' shortcode in all versions up to, and including, 2.7.12 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Djaidja Moundjid
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/25d6ee47-2a7b-486e-856b-336964b387ae?source=cve
- https://plugins.trac.wordpress.org/browser/linear/trunk/blocks/buy-commissions/buy-commissions.php#L213
- https://wordpress.org/plugins/linear
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3226733%40linear&new=3226733%40linear&sfp_email=&sfph_mail=#file4
Affected Vendor
linearoy
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